I use it in some of my contest and its a great tool for me. Personally I didn't like the change of reward distribution to 95 % creator and 5 % community. I felt as 80 / 20 was perfect. I would rather it changed back to 80 / 20 or just remove the community upvote reward altogether and make the bounty rewarded 100 % from the creator.
A min bounty might be a good Idea as well. Nothing too high as you want it low enough for new comers to test the service.